Honestly, I tried the Canon RF 50mm f/1.8 STM for street stuff but the autofocus on the R7 was kinda hit or miss for me. Super compact, sure, but definitely not as sharp as I expected wide open. If you really need something fast, maybe grab that one just for the price, but dont expect miracles in low light...

Coming back to this since I saw you mention a tight deadline. Honestly, dont blow your budget on something you might regret. I picked up the Canon RF 35mm f/1.8 Macro IS STM hoping it would be my street companion, but unfortunately the focus breathing is super distracting for video and it feels kinda plasticky for the price. Not as good as I expected for low light, tbh. It fits the RF mount fine, but the stabilization is hit or miss on the R7 sensor. If you really want something reliable, the Canon RF 85mm f/2 Macro IS STM is way sharper, but it might be too tight for street stuff on that crop sensor. Just be careful with what you buy last minute, I had issues with gear arriving defective before a big trip once and it was a total nightmare. Might be better off renting if you want to avoid a bad surprise.

Re: Honestly, I tried the Canon RF 50mm f/1.8... yeah, the autofocus can be a bit jittery on the R7's sensor. If you need something reliable for your trip, I honestly think you should look at the Canon RF 16mm f/2.8 STM. It is super light and gives you a nice wide field of view that works well on the crop sensor. It is definitely sharper than the nifty fifty, and having that extra room for street scenes is a lifesaver. You could also check out the Canon RF 35mm f/1.8 Macro IS STM if you can find one used under your budget. It has image stabilization which honestly helps a ton with low light handheld shots. Just make sure you get a decent lens hood so you dont get weird flares.